The U.S. has the world's police force, if they wanted to find you, they could. And for renunciation of citizenship, there's a one time liquidation tax where yo

The U.S. has the world's police force, if they wanted to find you, they could. And for renunciation of citizenship, there's a one time liquidation tax where you pay taxes on all of your gains (so Bezos would have to pay a flat ~20% on his Amazon holdings to renounce). So the U.S. is the only country in the world that could get away with a global wealth tax on their citizens (they already tax Americans' incomes irrespective of country).